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Commit 43c78d88 authored by Masahiro Yamada's avatar Masahiro Yamada
Browse files

kbuild: compile-test kernel headers to ensure they are self-contained 



The headers in include/ are globally used in the kernel source tree
to provide common APIs. They are included from external modules, too.

It will be useful to make as many headers self-contained as possible
so that we do not have to rely on a specific include order.

There are more than 4000 headers in include/. In my rough analysis,
70% of them are already self-contained. With efforts, most of them
can be self-contained.

For now, we must exclude more than 1000 headers just because they
cannot be compiled as standalone units. I added them to header-test-.
The blacklist was mostly generated by a script, so the reason of the
breakage should be checked later.

Signed-off-by: default avatarMasahiro Yamada <yamada.masahiro@socionext.com>
Tested-by: default avatarJani Nikula <jani.nikula@intel.com>
Reviewed-by: default avatarJoel Fernandes (Google) <joel@joelfernandes.org>
parent 7199ff7d

Makefile

+1 −0
Original line number Diff line number Diff line
@@ -618,6 +618,7 @@ ifeq ($(KBUILD_EXTMOD),) 
init-y		:= init/

drivers-y	:= drivers/ sound/

drivers-$(CONFIG_SAMPLES) += samples/

drivers-$(CONFIG_KERNEL_HEADER_TEST) += include/

net-y		:= net/

libs-y		:= lib/

core-y		:= usr/

include/Kbuild

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+1270 −0

File added.

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init/Kconfig

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@@ -108,6 +108,17 @@ config HEADER_TEST 
	  If you are a developer or tester and want to ensure the requested

	  headers are self-contained, say Y here. Otherwise, choose N.



config KERNEL_HEADER_TEST

	bool "Compile test kernel headers"

	depends on HEADER_TEST

	help

	  Headers in include/ are used to build external moduls.

	  Compile test them to ensure they are self-contained, i.e.

	  compilable as standalone units.



	  If you are a developer or tester and want to ensure the headers

	  in include/ are self-contained, say Y here. Otherwise, choose N.



config UAPI_HEADER_TEST

	bool "Compile test UAPI headers"

	depends on HEADER_TEST && HEADERS_INSTALL && CC_CAN_LINK